Hello,

Please add this code to the Theme Settings > Custom CSS > Global:

.whb-sticked .wd-header-my-account .wd-tools-icon:before {
color:red;
}
.whb-sticked .wd-header-search .wd-tools-icon:before {
color:red;
}
.whb-sticked .wd-header-cart .wd-tools-icon:before {
color:red;
}

Best Regards